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Sagot :

VINS

bonjour

A

x

x² + 2

4 ( x² + 2 )

4 ( x² + 2 ) - 2 x

= 4 x² + 8 - 2 x

B

x

2 x

2 x - 1

2 ( 2 x - 1 )  = 4 x - 2

x ( 4 x - 2 ) =  4 x² - 2 x

4 x² - 2 x + 10

Paul a raison

4 x² - 2 x + 10 - ( 4 x²- 2 x + 8 )

= 4 x² - 2 x + 10 - 4 x² + 2 x - 8

=   2

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